Coupling for brake and transmission rods.



L. COTTINGHAIVI.

couPLlNG FOR BRAKE AND TRANsMlssloN Rous.

APPLICATION FILED APR.11, l9l4.

Patented 0G13. 19, 1915.

nvenfcoz L Ems C oTTmemaM n LEWIS COT'IINGHAM, OlF DELTA, OHIO.

FFlFMW COUPLING FUR BRAKE AND TRANSMISSION RODS.

Specification of Letters Patent.

Patenten oet. ia, rais.

Application led Aprilvll, 1914; Serial No. 831,268.

novel features of construction whereby the parts at the coupling or joint are held in a yielding engagement with each other so as to preventV rattling or objectionable noises even after the parts become worn and loose.

ln most automobiles there are a number of knuckle joints or couplings for the brake and transmission rods, and when the parts are new the pivot pins fit snugly Within the openings of the joints so .that there is no looseness and rattling, although the joints quickly become worn in use, and after they become loose the aggregate rattling noise produced by all of the joints is very objectionable. a

rllhe object of the present invention -has been to provide a practical and inexpensive meansfor preventing this rattling noise at the joint after the latter' have become worn and loose. y

A further object of the invention is to provide anon-rattling coupling joint which can be applied to any conventional form of brake vand transmission rod, which is simple and inexpensive in its construction, which will not get out of repair or cause vany binding action at the joint, and which will operate in an effective manner to take up the looseness and prevent rattling.

With these and other objects in view, the invention consistsv in certain novel combina-- tions and arrangements of the parts as will more fully appear as the description pro-v ceeds, the novel features thereof being pointed out in the appended claim.

For a full understanding of the invention. reference'is to be'had'to the following description and accompanying drawing, in which Figure 1 is a side elevation of a brake vrod provided with a coupling constructed in accordance with the invention. Fig. 2 is a top plan view of the joint between the rear end ofthe brake rod and the brake lever. Fig. 3 1s a longitudinal sectional view through the jolnt between the brake rod and brake lever.

Corresponding and like parts are referred to 1n the following description and indicated 1n all the views of the drawing by the same reference characters.

For the purpose of illustration the invention has been illustrated as applied to the knuckle joint between the rear end of a v brake transmission rod and a brake lever, although 1t will be obvious that the inventlon may be applied to any similar joint between a transmission rod and the member to which it is pivotally connected.

Referring to the drawings, the numeral l designates a brake transmission rod which is of the conventional construction. The forward end of the transmission rod l is pivotally connected at 2 to a. foot lever 3, while the rear end thereof is connected by a knuckle joint'to the brake lever 4. A sleeve 5 1s threaded or otherwise fitted upon the rear end of the brake rod 1, the extremity of the sleeve being bifurcated or forked to provide the arms 6 between which the extremity of the brake lever 4 is received, said brake lever being engaged by a pivot pin 7 which passes through the same and connects the arms of the bifurcation. Then the parts are new the pivot pin 7 fits snugly within the openings of the arms G and brake lever 4 so that there is no looseness at the joint and no rattling. However. the parts quickly become worn at the joint. and in order to prevent rattling the invention provides means for holding the loose parts in a firm,but yielding engagement with each other.

The ends of the pivot pin 7 are shown as projecting upon opposite sides of the arms 6 and being transversely perforated to receive the cotterpins 8. Extending transversely across the bore of the sleeve 5 at an intermediate point in the length thereof is a. transverse pin 9, and fitted within the bore of the sleeve is a coil spring 10,. one end of the said coil spring bearing against the transverse pin 9 'while the opposite end thereof bears against the pivot end of the brake lever el, This spring is always under a certain amount of compression and acts to hold the parts of the joint in a firm but yielding engagement with each other. as indicatedvby Fig. 3, so as to take up all of the looseness in the joint and prevent rattling. The spring is arranged, however, in such a manner that it does not interfere in any manner with the freedom of movement at the joint and is not liable to be acci- ,dentally displaced or injured.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is

As a newarticle of manufacture the herein described anti-rattling coupling joint for brakes and the like includingr a brake rod, a stock formed with a tubular body portion and a bifurcated end arranged in alinement with the bore of the tubular body portion, said tubular body portion being threaded upon the before mentioned rod, a pivot pin connecting the arms of the bifurcated end of the stock, a lever received Within the said bifurcation and engaging the pivot pin, a transverse pin passing through the tubular body portion at a point spaced from the end of the rod, and a compression spring received Within the tubular body portion of the stock, one end of the spring engaging the transverse pin While the opposite end thereof bears against the end of the lever so as to take up looseness at the joint and prevent rattling.

In testimony whereof I aiX my signature in presence of two Witnesses.

LEWIS COTTINGHAM.

Witnesses:

M. B. Comuni., D. B. RABER. 

